A group of scientists in search of lost Atlantis are plane wrecked on an uncharted island inhabited by monsters of the prehistoric era.

A professor organizes an expedition to search for the lost city of Atlantis taking with him Pablo, Esther and Laura. The plane they are on is forced down on an uncharted island. As they explore their surroundings, they learn that the land is inhabited by prehistoric dinosaurs. One of them scares Laura as she is swimming. This leads to the discover a community of cave dwellers. One of them, Molo, has been ousted from his leadership position. He rescues Laura and takes her back to meet his tribe. Despite their cultural differences, through battling dinosaurs together, they fall in love. She teaches him the concept of money, shows his people how to make better weapons and gives the women personal grooming tips. Ultimately, a volcano destroys most of the island just as their plane is finally repaired.—Garon Smith